bettman



(No Model.)

J. M. BETTMAN.

PEDAL ATTACHMENT FOB PIANOS.

Patented Apr. 8, 1884.

.I I v Y m d M u v w L Q u 2 A 001 E 7 0. a I M 6 w m 9 n 9 fifl/ I L 0N @nd N, PETERS. Pholo-Lilhngraphcn Washingml. Dv C.

UNITED Srarns PATENT @rrrer.

JOHN M. BETTMAN, OF NORTH PLAINFIELD, NEWV JERSEY.

PEDAL ATTACHMENT FOR PIANOS.

SPECIFICATION forming part of Letters Patent No. 296,308, dated April 8,1884.

Application filed June 25,1883. (No model.)

The object of this invention is to have the piano-forte pedals adaptedfor operation by children players as well as by adults.

My invention relates to the combination, with the ordinary piano-fortepedal, of an aux-v iliary pedal,which is attached and constructed tobeput in or out of operation and made ad- I 5 justable vertically, so asto suit children as well as adults. I attain these objects by themechanism illustrated in the accompanying drawings, in which Figure 1represents a crosssection of a piano-forte and its pedals with myimprovement attached. Fig. 2 is a detached top view of the pedals withmy improvement, the lyre of the piano being shown horizontally bisected.Fig. 3 is a side view of a portion of the attachment to the pedal. Fig.4 is a horizontal section of the same.

A represents the piano-forte withthe ordinary lyre, B, and thepedal-levers O O for operating the damper by means of lifter-rods D D.

To the lyre B is permanently secured, for each pedal-lever O, a verticalsquare rod, E. and upon each of the rods E is attached a horizontaltreadle, F, which has two vertical guide-hubs, G G, through which rod Epasses loosely. Between said hubs G is arranged a horizontal collar, H,having a central square opening, I, fitted to slide loosely over the rodE, and furnished with a proper set-screw, J to fasten the collar uponthe said rod E. Said hubs G G have round openings large enough to allowthem to turn around the rod E 5 but on the side of the treadle F isarranged ahorizontal spring-bolt, K, guided in the staples L L, andbetween said staples the bolt is made with a shoulder or collar, N, andis furnished with a spiral spring over it to press the bolt toward thecollar H, which has two notches or cavities, hand h, in its periphery,and a quarter-turn from one another, to receive the end of thespring-bolt K, and thereby lock said treadle to said collar H in eitherof two positions-that is, either over and to operate upon thepedal-lever 0 when the bolt is in cavity h, or turned aside away from itwhen the bolt is in cavity h, and so that the-pedal-lever C may beoperated independently, as shown in Figs. 2, 3, and 4. Said treadle hason its outer and top side a cavity, M, to admit the heel of the shoe ofthe player and hold it from sliding.

To the side'of the treadle oppositeto that on which the spring-bolt isattached is pivoted a small sub-pedal, O,which passes in through a slot,P, made in the top plate of said treadle F. Its outer loose end has alateral top plate over the treadle, upon which the forward part of thefoot or shoe of the'player presses; and on the side of the pedal 0 isarranged along vertical screw or adjustable rod, 0, passing through anut or sleeve, Q, and down to the pedal-lever O. Said nut or sleeve isattached to the pedal 0 by a pivot or swivel, u, and the bottom end ofthe rod 0 is sunk into the top side of the pedal-lever O. The top end ofthe vertical square rod E is attached to a lateral plate, R, by means ofthe screw S, and the plate Bis secured to the front side of the lyre.

The bottom end of the rod E is held to the plate T, which is and placedover the pedal-levers O O, and the a bottom ends of, the rods 0 O areadjusted properly in the respective cavities sunk in the top side of thepedal-levers for them. By means of the screws or rods 0 O the treadles FF are properly raised and adjusted to the players heels to locate themin the cavities M M. \Vith the set-screws J J the collars H H aresecured at the proper height on the rods EE, so as to firmly hold thetreadles from sliding down. By means of the spring-bolts K K, properlyengaged in the cavities h h, said treadles are also held from turning onthe rods E E. By the pressure of the fore part of the player s foot onthe pedal 0, the rod 0 and the corresponding pedal-lever O are readilydepressed as required.

To have the piano-forte pedal changed for the use of adults, each of.the treadles F F is readily turned to the side of the lyre away from thepedal-levers G O, by simply withdrawing the spring-bolts K from thecavities h h, and

by allowing the SILIUO to engage in the cavities the pedal 0 with thepedals of the piano, as 10 h h, the treadles are then held properly inset forth. the latter position, as shown in Fig. 2. In witness whereof Ihave hereunto set my hat I claim as my invention, and desire to handthis 3d day of May, 1883. 5 secure by Letters Patent, is A e L r In itpianopedal attachment, the foot-plate Jon} BDFTMA Rhaving hubs G, pedal0, and bolt K, in combination with the collar II on rod 13, havingcavities h 70, and the rod 0, for connecting In presence of- BoEKLnN, S.TOWNSEND.

